Determination of Diffusion Coefficients of Lithium in Solid Electrolyte LiPON

A structural model of LiPON solid electrolyte, containing elements that simulate drift conductivity, diffusion conductivity, and leakage current was proposed. The dependence of the impedance of the structural model on frequency was calculated, and the parameters of the model at which the theoretical...

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Bibliographic Details
Published in:Batteries (Basel) 2021-06, Vol.7 (2), p.21
Main Authors: Rudy, Alexander, Mironenko, Alexander, Naumov, Victor, Novozhilova, Alena, Skundin, Alexander, Fedorov, Ivan
Format: Article
Language:English
Subjects:
Approximation
conductivity
Diffusion coefficient
Electrodes
Electrolytes
impedance spectroscopy
Ion diffusion
Leakage current
Lithium
Nyquist plots
Permeability
Silicon wafers
solid electrolyte
Solid electrolytes
Spectrum analysis
Structural models
warburg element
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Summary:A structural model of LiPON solid electrolyte, containing elements that simulate drift conductivity, diffusion conductivity, and leakage current was proposed. The dependence of the impedance of the structural model on frequency was calculated, and the parameters of the model at which the theoretical curve best approximates the experimental Nyquist diagrams were determined. Based on these data, the ion diffusion coefficient and conductivity of LiPON were calculated, which are D1 = 1.5 × 10−11 cm2/s and σ = 1.9 × 10−6 S/cm, respectively.
ISSN:2313-0105
2313-0105
DOI:10.3390/batteries7020021